Author: Alexander Zangerl <az@debian.org>
Subject: wcswidth is only exported if _XOPEN_SOURCE is defined

diff -urNad '--exclude=CVS' '--exclude=.svn' '--exclude=.git' '--exclude=.arch' '--exclude=.hg' '--exclude=_darcs' '--exclude=.bzr' nmh-1.5-release~/sbr/fmt_scan.c nmh-1.5-release/sbr/fmt_scan.c
--- nmh-1.5-release~/sbr/fmt_scan.c	2012-06-11 14:06:19.000000000 +1000
+++ nmh-1.5-release/sbr/fmt_scan.c	2012-06-14 11:29:01.118054316 +1000
@@ -21,6 +21,7 @@
 #endif
 #include <time.h>
 #ifdef MULTIBYTE_SUPPORT
+#define _XOPEN_SOURCE
 #  include <wctype.h>
 #  include <wchar.h>
 #endif
